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Polycarboxylate superplasticizer for ceramic and preparation method of polycarboxylate superplasticizer

A technology of polycarboxylic acid and water reducing agent, applied in the field of polycarboxylic acid water reducing agent for ceramics and its preparation, can solve problems such as limitation, green body quality problems, inability to play a dispersing effect, etc. Effect

Inactive Publication Date: 2017-05-24
石家庄市海森化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the inorganic water-reducing agent cannot play an obvious dispersing effect because of its insignificant water-reducing effect, and is limited by the dosage factor, and cannot play a very obvious water-reducing effect, and the prepared green body is often There are quality problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] ①Put 200g of deionized water into a 500ml four-necked flask equipped with a thermometer and stirring equipment, add isobutenol polyoxyethylene ether 400:80g, keep the temperature in a water bath at 40°C, and stir for 10 minutes.

[0045] ②The solution prepared with 0.25g of thioglycolic acid, 0.5g of L-ascorbic acid and 40g of deionized water is recorded as component A.

[0046] ② The solution made of 20g of acrylic acid and 20g of deionized water is recorded as component B

[0047] ③ The solution prepared with 2.3g of 27.5% hydrogen peroxide and 20g of deionized water is recorded as component C.

[0048] ④ Add A, B, and C components dropwise at the same time, and the dropwise addition is completed within 2 to 3 hours. After the dropwise addition, continue to stir to make it react for 1 to 2 hours. The reaction is complete.

Embodiment 2

[0050] ① Add 230g of deionized water to a 500ml four-necked flask equipped with a thermometer and stirring equipment, add 100g of sodium methylpropenesulfonate, keep the constant temperature at 60°C in the water bath, and stir for 10 minutes.

[0051] ② Fully dissolve 30g of acrylamide and 30g of deionized water, and record it as component A.

[0052] ③ Take 0.2g of mercaptopropionic acid and 15g of deionized water, fully dissolve it, and record it as component B.

[0053]④ Add 2.0 g of ammonium persulfate directly into the kettle, and stir for 10 minutes.

[0054] ⑤ A and B components are added dropwise at the same time, and the dropwise addition is completed within 3 to 4 hours, and the stirring is continued for 1 to 2 hours, and the reaction is completed.

Embodiment 3

[0056] ① Add deionized water: 150g to a 500ml four-neck flask equipped with a thermometer and stirring equipment, add isobutenol polyoxyethylene ether 400: 250g, and keep a constant temperature of 85°C in a water bath.

[0057] ② The solution prepared by fully dissolving 20g of acrylic acid, 5g of acrylamide and 20g of deionized water is recorded as component A.

[0058] ③ Fully dissolve 2.0g of sodium hypophosphite and 40g of deionized water, and record it as component B.

[0059] ④Add 1.0g of dibenzoyl peroxide directly into the kettle and stir for 10 minutes.

[0060] ⑤ A and B liquids are added dropwise at the same time, and the dropwise addition is completed within 3 to 4 hours, and the stirring is continued for 1 to 2 hours, and the reaction is completed.

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PUM

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Abstract

The invention discloses a polycarboxylate superplasticizer for ceramic and a preparation method of the polycarboxylate superplasticizer and relates to the fields of chemical building materials and daily necessities. The superplasticizer is prepared from the following components in percentage by weight: 0 to 55 percent of short-chain polyoxyethylene ether monomers, 5 to 45 percent of comonomer, 0.05 to 2.5 percent of a free radical initiator, 0.01 to 1.2 percent of a chain transfer agent, and the balance of deionized water. Molecules of the polycarboxylate superplasticizer tend to be linear or in a short tooth comb shape, so that intercalated adsorption of mud to the superplasticizer is effectively reduced; by adjusting a molecular structure, covering and wrapping to dispersing particles are improved, a positive effect for release of free water is realized, and the water-reducing rate and the qualification rate of a green body are improved.

Description

technical field [0001] The invention relates to the fields of chemical building materials and daily necessities, in particular to a polycarboxylate water reducer for ceramics and a preparation method thereof. Background technique [0002] Ceramic superplasticizer is a kind of ceramic industry additive, also called deflocculant or deflocculant, its main function is to improve the fluidity of slurry glaze, meet the filling and leveling requirements; reduce water content to prevent shrinkage and Cracking, increasing yield. In addition, it has a grinding and dispersing effect on the mud particles, which can shorten the ball milling time and save energy consumption. At present, the water reducing agents widely used in the ceramic industry are as follows: 1. Inorganic type, such as sodium chloride, sodium silicate, sodium hexametaphosphate and other inorganic substances containing cations; 2. Organic type, common humic Acids, sulfonates or polyols such as triethanolamine etc. A...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F228/02C08F220/06C08F220/56C04B24/26C04B103/30
Inventor 庞顺星梁英潘二军马墨岩武海东朱佳宇
Owner 石家庄市海森化工有限公司